Testing Strategy
The testing strategy for the dashboard prototype aims to ensure reliability, maintainability, and performance. Since it's a UI heavy project, E2E testing is a key to ensure trust while iterating on the dashboard.
E2E Testing
Currently
We're using Calypso's existing infrastructure, which separates the actual tests (specs) from so-called "page objects" (and optionally "components"). The latter represent pages (e.g. DashboardPage) with specific methods for interaction and inspection:
- test/e2e/specs/dashboard/
- packages/calypso-e2e/src/lib/pages/dashboard-page.ts
The setup itself lacks centralised documentation, IMO, particularly around decrypting the secrets necessary to letting Playwright run Calypso. What we get in return is a system that has already solved many problems (user authentication, etc.).
Caveat / question
Why must Jest be passed an environment variable so that it tests on localhost and not wordpress.com? Right now we need to call CALYPSO_BASE_URL=http://calypso.localhost:3000 yarn workspace wp-e2e-tests test -- test/e2e/specs/dashboard/. Why is that not the default?
Next
Consider a lighter, less abstracted way of writing tests, without page objects. I don't think the new dashboard justifies the added complexity.